Rotary engine.



No. 803,324. PATENTED' OCT. 31, 1905. P. BARTOLETTI.

ROTARY ENGINE.

APPLIOATIOK IIL-ED P334, 1905.

2 SHEETS -SHEET 1.

1 o Q E fer lllnunuull WIN/E8858; I: 15 INVENTOR No. 803,324. V PATENTED OCT. 31, 1905.

P. BARTDLETTI.

ROTARY ENGINE.

urnoumx FILED MBA, 1905.

2 sums-51mm 2.

ll l 04% F i m 1 g d 62* c T BY w E v ATTORNE PETER BARTOLETT I, OF BROWNSVILLE, PENNSYLVANIA.

ROTARY ENGINE.

Specification of Letters Patent.

Patented Oct. 31, 1905.

Application filed February 4. 1905. elerial No, 244,113.

To a, whom it may concern.-

Be it known that I, PETER BARTOLETTI, a subject of the King of Italy, and a resident of Brownsville, in the county of Fayette and State of Pennsylvania, have invented a new and Improved Rotary Engine, of which the convenient and quick reversing and to utilize the motive agent to the fullest advantage.

The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is an end elevation of the improvement, one of the cylinder-heads being removed. Fig. 2is a longitudinal sectional elevation of the improvement on the line 2 2 of Fig. 1'. Fig. 3 is a sectional plan view of the same on the line 3 3 of Fig. 1. Fig. 4: is an inverted reduced plan view of the cylinder on the line 4 4 of Fig. 1; and Figs. 5 and 6 are face views of opposite ends of the cylinder, the

corresponding piston-heads being remov d.

The cylinder A of the engine is provided with a base A and cylinder-heads A and A in which is journaled the main shaft B, connected at its outer end in the usual manner with other machinery to be driven from the rotary engine. On the shaft B, within the cylinder A, is secured a piston C, having concentric rims O and 0 connected with each other by a central web portion C formed with spaced openings (3*, in which extend radially-disposed Wings D, forming piston-heads against which presses the motive agent to turn the piston G either in a forward or reverse direction, as hereinafter more fully described.

The pivots D of the wings D are journaled in the rims C and C and on the outer end of each pivot D is secured a shoe E, engaged by a cam device in the form of two oppositelydisposed cams F and F, secured to or formed on the corresponding cylinder-heads A and A so that the wings D are turned from a folding position or when in alinement with the web G into a right-angular position, so

l that the side edges of the wings contact with correspondingly-shaped rings A and A secured to or forming part of the cylinder-heads A and A The space between the rings A and A forms the working chamber of the engine, so that the steam or other motive agent can act on the wings when in a right-angular position to turn the piston 0 either forwardly in the direction of the arrow (0 or backwardly in the reverse direction of the arrow (0. Into this working space extends an abutment made of two parts G and Gr, secured to or forming part of the rings A and A, the parts being spaced from each other to permit the passage of the Web 0 and the wings D when the latter are in a closed position, as will be readily understood by reference to the top portion of Figs. 1 and 2.

The cam device consisting of the cam-rings F and F is so arranged that the wings D move into a closed position on approaching the abutment and are positively turned into a rightangular position by the said cam device and shoes E on leaving the abutment, the wings being positively held in the right-angular position during their passage through the working space, it being expressly understood that the cams are so shaped relative to the abutment that the wings assume the position described, no matter in which direction the piston C is turned.

Into the working space of the cylinder open admission-ports a and 7) on opposite ends of the abutment G G and the said ports open into a steam-chest H, connected by a pipe I with a boiler or other suitable source of mofive-agent supply. In the steam-chest H is mounted a slide-valve J for controlling the ports a and Z) in such a manner that when one of the ports a or b is open the other is closed. For instance, as shown in the drawings, the port I) is closed while the port a is open, so that the motive agent passes from the steamchest H into the working space of the cylinder on the right-hand side of the abutment G G to turn the piston O in the direction'of the arrow a. The slide-valve J is manually controlled and for this purpose is engaged by one end of a screw-rod K, screwing in the end of the steam-chest H and provided at its outer end witha handle K under the control of the operator for the latter to turn the screw-rod K to shift the slide-valve J for opening one port and closing the other, as above described.

Exhaust-ports c and d extend through the ring A and the cylinder-head A to the out- IIO side, the said ports being located a distance from the ends of the abutment, so that the steam acting on the wings while in a rightangular position gives impulses to the piston C to rotate the same, the steam finally exhausting through the port 0 or d, according to the direction in which the piston C is rotating.

From the foregoing it will be seen that the rotary engine is very simple and durable in construction and is composed of comparatively few parts not liable to easily get out of order.

For practical purposes it may be desirable to make the rims C and C and their connecting-webs C of parts separate from the body portion of the piston (l, as indicated in the drawings; but this feature is not essential.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A rotary engine comprising a cylinder having an abutment formed with a passage extending from end to end of the abutment, a piston mounted to turn concentrically in the said cylinder and provided with spaced rims forming with the cylinder-heads a Working chamber between which rims extends the said abutment, the piston-Web portion extending between the rims passing through the said abutment-passage,the said piston-web portion having spaced openings, wings in the said openings, mounted to turn in hearings in the piston-rims, shoes secured on the outer pivots of the wings, and oppositely-disposed cams on the heads of the cylinder, engaged by the said shoes, for turning the Wings.

2. A rotary engine comprising a cylinder having an abutment formed with a passage extending from end to end of the abutment, a piston mounted to turn concentrically in the said cylinder and provided with spaced rims between which extends the said abutment, the piston-web portion extending between the rims passing through the said abutment-passage,the said piston-web portion having spaced openings, wings in the said openings, mounted to turn in bearings on the piston, shoes secured on the pivots of the wings, a fixed cam in said cylinder, engaged by the said shoes, for turning the wings, a steam-chest on the said cylinder, connected with a steam-supply, the steam-chest being connected by admissionports with the cylinder on opposite ends of the abutment, and a manually-controlled reversing-valve in the said steam-chest, over the said ports.

3. A rotary engine, comprising a cylinder having rings on theinner faces of its heads, a piston having spaced and concentric rims forming with the rings a working chamber, the rims being connected by a central web having a plurality of openings, wings pivoted between the rims in the openings thereof and provided with shoes on their pivots, an abutment formed with a passage between which extends the web of the rims, the abutment extending between the rims of the piston, and fixed cams for engaging theshoes on the pivots of the wings.

4:. A rotary engine, comprising a cylinder having rings on its heads, abutments on the rings, oppositely-disposed arms on the cylinder-heads outside of the rings. and a piston mounted in the cylinder and comprising spaced and concentric rims connected by a web having a plurality of openings, and wings pivoted in the openings of the Web and provided on their outer pivots with shoes engaging the said cams.

5. A rotary engine, comprising a cylinder having rings on its heads, abutments of unequal length on the rings, cams on the cylinder-heads outside of the rings and terminating opposite the abutments, and a piston mounted in the cylinder and comprising spaced and concentric rims connected by a web having a plurality of openings and pivoted wings in the openings of the web, the pivots of the wings being mounted in the rims of the piston and the outer pivots being provided with shoes outside of the outer rim.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

PETER BARTOLETTI.

Vitnesses:

THEO. G. HOSTER, EVERARD BOLTON MARsHALL. 

